This dissertation advances automated negotiation by developing agents that can learn and adapt across diverse negotiation settings through three increasingly sophisticated approaches: automated algorithm configuration, portfolio-based strategy selection, and end-to-end reinforcement learning with graph…

How do different emotional expressions influence the behavior of other people in negotiations?

Negotiation can only really be an alternative to warfare, if the parties agree on a framework of rules and procedures. And if the confidence of the partners may increase in another. But negotiations continue to wage war by peaceful means.

From the formative period of Islam to the contemporary world, Muslims have negotiated changing modalities of being Muslim.

Workshop

Why do some parties fail to settle conflict, even after long periods of fighting? ISGA PhD candidate Valerie Sticher suggests that costly concessions often stand in the way of a negotiated agreement. Conflict party members not only care about their in-group's welfare, but also want to avoid rewarding…

Festschrift for Prof. Dr Raymond H.A. Corbey in celebration of his 70th birthday

How do borderland dwellers living along militarised frontiers negotiate regimes of state security and their geopolitical location in everyday life? What might 'freedom' mean to those who do not resist captivity engendered by borders? Focusing on the predicaments of a double-minority, Radhika Gupta examines…

Bandura Witharana defended his thesis on 27 September 2018

The literature indicates that teacher professional development and learning may be improved by using formative assessment procedures. This thesis focuses on a specific form of formative assessment, negotiated assessment, which is characterised by the exchange of views between assessor and assessee and…

Conceptualizing ceasefires as bargaining instruments challenges established ideas about the processes that lead up to conflict settlement, and about war re-emergence, with important implications for our understanding of war and peace.

This project focuses on Dutch registration of land and people in rural Sri Lanka. How did the practice of “fixating” the fluid social relations and dynamic daily practices into categories affect family strategies of reproduction and survival?

This article investigates how temporary coalitions of non-state actors engage in international negotiations on environmental issues.

What was the function of the Dutch Protestant Church in Sri Lankan society? Why did people relate to the Church and how did conversion influence their life course?

The brutal killing of an IS-held Jordanian pilot might make negotiating with IS not an option. Some captives of IS were freed though. So why not try to negotiate?

Joris Larik, Assistant Professor at Leiden University, wrote about the topics of the Brexit, the EU-UK Withdrawal Agreement, and Global Treaty (Re-)Negotiations.

Channi Li defended her thesis on 15 October 2019.

A broad package of measures has been launched to deepen and expand the EU-Switzerland relationship. Christa Tobler was interviewed by both Süddeutsche Zeitung and ARD/Deutschlandfunk about these developments.

Leiden Public Administration alumnus Jeffrey Jonkers negotiates in Syria with the Assad government, civilians and even with IS. The UN peace talks are due to start shortly in Geneva. Jonkers negotiates behind the scenes.

A History of Modern Political Thought in East Central Europe is a two-volume project, authored by an international team of researchers, and offering the first-ever synthetic overview of the history of modern political thought in East Central Europe.

Chaider Bamualim defended his thesis on 9 September 2015

When negotiating a salary or a purchase, negotiators often make strategic use of emotions. Social psychologist Zi Ye demonstrates how one negotiator might fake happiness, exaggerate disappointment, or conceal anger — and how the other side may either appreciate or disapprove of such emotional tactics.…

Employees are now in a better position to negotiate the terms and conditions of their employment. This is mainly visible in wage increases and fringe benefits. Olaf van Vliet, Professor of Economics at Leiden University, spoke to NU.nl about workers' improved negotiating position.

Now the election results are in, how should we interpret them? Time to call Associate Professor in Political Science Tom Louwerse.

The Dutch cabinet formation – a process that has now been underway for five months – is at a standstill for the time being. Formation discussion leaders Elbert Dijkgraaf and Richard van Zwol are due to publish their report in mid-May. Wim Voermans, Professor of Constitutional Law, updates listeners…

The Hazelhoff Centre for Financial Law organized the third edition of the workshop ‘Principles for effective negotiations in legal practice’ on 5 June 2018.

The EU and Switzerland have negotiated a broad package of agreements that awaits formal signature by the parties.

The expansion of European powers overseas brought Europeans into contact and conflict with the inhabitants of Africa, Asia, and the Americas. Historians of colonialism and post-colonial scholars have long argued that this encounter was crucial for the formation of European identity, which originated…

On 21 May 2025, the chief negotiators of Switzerland and the EU Brevier initialled a package of agreements intended to strengthen their legal ties that have developed since the 1950s

Switzerland and the EU are conducting negotiations on a renewed institutional framework for a number of already existing and future market access agreements.

Career and apply for jobs

It is widely known that conflict parties engage in ceasefires for a variety of reasons, but how do these reasons relate to the military and political aspirations of conflict party leaders?

Intelligent machines are going to make ethical decisions too. Should a self-driving car be allowed to slam into pedestrians to save its passengers from a head-on collision? Should a negotiation app be able to detect stress in your opponent’s voice? And who makes these decisions: the user, the system’s…

A History of Modern Political Thought in East Central Europe is a synthetic work, authored by an international team of researchers, covering twenty national cultures and 250 years. It goes beyond the conventional nation-centered narratives and presents a novel vision especially sensitive to the cross-cultural…

Irene Moretti published the article Kin Enough in Social Analysis, The International Journal of Anthropology.

Organisations such as the EU are of enormous benefit to the member states, but the inhabitants of the member states are often unaware of this. Leiden researchers investigate whether international organisations such as the EU or ASEAN are able to influence global politics.

‘Schiedsgerichte in den Aussenverträgen der EU. Neue Entwicklungen unter Einbezug der institutionellen Verhandlungen Schweiz–EU’, Jusletter 28 May 2018

In the globalised world of today, traditional definitions of national Self and national Other no longer hold. The unmistakable transformation of German and Dutch societies demands a thorough rethinking of national boundaries on several levels.

This research project focuses on the development of a popular national agency in late nineteenth century Amsterdam and the question how ‘ordinary’ citizens imagined ‘the Netherlands’ through the experience and use of their urban surroundings.

Big Science, commonly defined as conventional science made big in three dimensions, namely organizations, machines, and politics, brings a plethora of different stakeholders together, often for a long period of time. This includes policymakers, scientists, (scientific) managers as well as local “host”…

In this article, Madeleine O. Hosli and Wen Pan examine how intergovernmental dynamics shaped the European Stability Mechanism, using Liberal Intergovernmentalism to assess negotiation phases, the influence of major member states, and which theoretical assumptions hold or need qualification.

A History of Modern Political Thought in East Central Europe is a synthetic work, authored by an international team of researchers, covering twenty national cultures and 250 years. It goes beyond the conventional nation-centered narratives and presents a novel vision especially sensitive to the cross-cultural…

This project maps the policy of ‘Paz Total’ (Total Peace) and ongoing peace negotiations between non-state armed groups and the government of Colombia under the presidency of Gustavo Petro (2022-2026).

Has there been continuity or change in US counterterrorism policy since 9/11? What factors led to the continuity or change, and how do we classify any such continuity or change?